Television – Image signal processing circuitry specific to television – Noise or undesired signal reduction
Patent
1994-06-08
1996-04-30
Harvey, David E.
Television
Image signal processing circuitry specific to television
Noise or undesired signal reduction
348607, H04N 521
Patent
active
055129595
ABSTRACT:
An adaptive method for suppressing video signal echoes in television equalizers including digital filters having coefficients which are updated in an adaptive and iterative manner using a modified LMS (Least Mean Square) algorithm until the difference, or output error, between a target output signal, called the reference signal, and an outgoing signal from the equalizer is gradually reduced. The method includes the steps of:
REFERENCES:
IEEE Transactions on Consumer Electronics, vol. 38, No. 4, Nov. 1992, New York, pp. 767-777, S. Roy, et al., "Ghost Cancellation For Advanced Compatible TV Systems Using Complementary Sequences".
IEEE Transactions on Consumer Electronics, vol. 35, No. 3, Aug. 1989, New York, pp. 184-194, Melih Pazarci, "An Adaptive Ghost Processor For Broadcast Television".
ICASSP 90, vol. 2, S2VA Speech Processing 2, 1990 International Conference On Acoustics, Speech, And Signal Processing, Apr. 3-6 1990, Dirk Van Compernolle, "Switching Adaptive Filters for Enhancing Noisy and Reverberant Speech From Microphone Array Recording".
Airoldi Fabrizio
D'Alto Viviana
Podesta Maria G.
Scalise Fabio
Driscoll David M.
Harvey David E.
Morris James H.
Pritzker Randy J.
SGS-Thomson Microelectronics S.R.L.
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